Semi-physical simulation system and method for infrared synthetic aperture detection equipment

Abstract

The invention provides a semi-physical simulation system and method for infrared synthetic aperture detection equipment. The system comprises an infrared radiation source, a collimating lens, a reflection light splitting module, the infrared synthetic aperture detection equipment and a five-axis turntable. The collimating lens is used for collimating light beams emitted by the infrared radiation source into parallel light, then the parallel light enters the reflection light splitting module, the reflection light splitting module divides the light beams into multiple paths, the multiple paths of light beams are received by all detection assemblies of the infrared synthetic aperture detection equipment at the same time, and through movement of the five-axis rotary table, the light beams are transmitted to the infrared synthetic aperture detection equipment. And simulation of a relative sight angle between the infrared target light beam and the infrared synthetic aperture detection equipment is realized. The infrared guidance control semi-physical simulation system is mainly applied to the field of infrared guidance control semi-physical simulation, light beams emitted by an infrared radiation source cover a plurality of peripheral detection assemblies at the same time through the reflection light splitting module, the light path structure of the system is simple and compact, the integration degree is high, and the occupied space is small; and the problem of semi-physical simulation of the infrared synthetic aperture detection equipment is successfully solved.

Description

Technical Field

[0001] The present invention relates to the field of infrared guidance control semi-physical simulation, and in particular to a semi-physical simulation system and method for infrared synthetic aperture detection equipment. Background Art

[0002] With the deep integration and continuous development of computer technology and optoelectronic technology, infrared guidance and control technology has achieved rapid development in today's scientific and technological field. Among them, infrared synthetic aperture staring imaging detection technology has gradually emerged in the field of optoelectronic detection and has become an important development direction due to its significant advantages such as small space occupation, high detection performance and strong adaptability to flight conditions.

[0003] Infrared synthetic aperture detection equipment contains multiple independent detection light paths, which are usually distributed around the detection equipment. This layout design enables the equipment to perform all-round detection of the target at the same time, thereby effectively covering a larger field of view.

[0004] In the existing infrared guidance control semi-physical simulation technology, most of them adopt the solution of direct projection of infrared target simulator. Specifically, the device under test is installed on the three axes in the flight turntable, and the infrared target simulator is installed on the two axes of the flight turntable target arm. During the simulation process, the posture change of the missile body is simulated by the movement of the three-axis flight turntable, and the movement information of the target is simulated by the movement of the two-axis target arm. In addition, in order to ensure the accuracy and effectiveness of the simulation, the exit pupil of the target simulator is required to match the entrance pupil of the detection device.

[0005] However, there is a prominent problem with infrared synthetic aperture detection devices. Since the distances between multiple detection optical paths of the device are usually far, the light beam aperture emitted by the infrared target simulator cannot cover all detection optical paths at the same time. This results in the inability to simulate multiple detection optical paths at the same time during the actual simulation process, making it difficult to meet the comprehensive simulation requirements of infrared synthetic aperture detection devices.

[0006] Through searching patent documents, it is found that CN108871733B discloses a near-field detection device for a large-aperture optical system and a measurement method thereof, which is composed of a collimator, a microlens array and a detector to form a Shack-Hartmann wavefront measurement device, characterized in that a point light source array is placed in front of the measured target as a measurement beacon, a spectroscope and a calibration point light source are placed in front of the focus of the measured target, and a collimator, a microlens array and a detector are placed in sequence behind the focus; the point light source array, the measurement target, the spectroscope and the calibration point light source form the system self-test optical path; the point light source array, the measurement target, the spectroscope, the collimator, the microlens array and the detector form the measurement optical path. This patent is based on the three-order aberration theory for near-field detection, and cannot solve the problem of beam coverage and simultaneous simulation of multiple components in the semi-physical simulation of infrared synthetic aperture detection equipment.

[0007] In summary, in view of the above-mentioned problems of the prior art, studying a semi-physical simulation system and method for infrared synthetic aperture detection equipment has become a key task that needs to be solved urgently. Summary of the invention

[0008] In view of the defects in the prior art, the object of the present invention is to provide a semi-physical simulation system and method for infrared synthetic aperture detection equipment.

[0009] A semi-physical simulation system for infrared synthetic aperture detection equipment provided by the present invention comprises:

[0010] An infrared radiation source, used for emitting an infrared beam;

[0011] A collimating lens, used for collimating the light beam emitted by the infrared radiation source into parallel light, the infrared radiation source is located on the focal plane of the collimating lens;

[0012] Infrared synthetic aperture detection equipment, including multiple detection components;

[0013] A reflective beam splitting module, comprising a plurality of reflective components, for receiving collimated parallel light and dividing it into multiple light beams, wherein the reflective components reflect the light beams to corresponding detection components, and the number of the reflective components is associated with the number of the detection components;

[0014] The five-axis turntable is used to drive the infrared synthetic aperture detection device to move, so as to realize the simulation of the relative line of sight angle between the infrared target beam and the infrared synthetic aperture detection device.

[0015] Preferably, the number of detection components is 3, namely a first detection component, a second detection component and a third detection component.

[0016] Preferably, the number of the reflective components is 6, namely a first reflective component, a second reflective component, a third reflective component, a fourth reflective component, a fifth reflective component and a sixth reflective component;

[0017] The first reflecting component and the second reflecting component cooperate with each other to reflect the collimated parallel light to the first detecting component;

[0018] The third reflecting component and the fourth reflecting component cooperate with each other to reflect the collimated parallel light to the second detecting component;

[0019] The fifth reflecting component and the sixth reflecting component cooperate with each other to reflect the collimated parallel light to the third detecting component.

[0020] Preferably, the first reflective component is arranged in parallel with the second reflective component, the third reflective component is arranged in parallel with the fourth reflective component, and the fifth reflective component is arranged in parallel with the sixth reflective component.

[0021] Preferably, the reflective spectroscopic module forms a virtual image of the entrance pupil positions of the first detection component, the second detection component and the third detection component. The virtual images formed by the entrance pupil positions of the respective detection components are closely connected and arranged without gaps around the rotation center of the five-axis turntable, and together constitute a virtual entrance pupil; the rotation center, the exit pupil surface center of the collimating lens and the center of the virtual entrance pupil coincide with each other.

[0022] Preferably, the infrared light beam radiated by the infrared radiation source is collimated by a collimating lens to emit parallel light, the parallel light is directed toward the rotation center, and then is reflected by the reflective spectroscopic module to be detected and received simultaneously by the first detection component, the second detection component and the third detection component.

[0023] Preferably, the parallel light is split into three by the reflective splitting module, wherein one light beam is received by the first detection component after being reflected by the first reflective component and the second reflective component, the second light beam is received by the second detection component after being reflected by the third reflective component and the fourth reflective component, and the third light beam is received by the third detection component after being reflected by the fifth reflective component and the sixth reflective component.

[0024] Preferably, the infrared radiation source is a black body, a xenon lamp, a halogen lamp, an LED, a resistor array, an LD light source or a modulated output light radiation of a modulation type device.

[0025] Preferably, the collimating lens is a fixed-focus lens or a zoom lens.

[0026] The present invention also provides a semi-physical simulation method for infrared synthetic aperture detection equipment, using the above-mentioned semi-physical simulation system for infrared synthetic aperture detection equipment, the method comprises the following steps:

[0027] Step S1: start the infrared radiation source to radiate an infrared beam, and the infrared beam is collimated by a collimating lens to emit parallel light, and the parallel light is directed toward the rotation center of the five-axis turntable;

[0028] Step S2: the parallel light is split by the reflective splitting module, one of the light beams is reflected by the first reflective component and the second reflective component, and then received by the first detection component, the second light beam is reflected by the third reflective component and the fourth reflective component, and then received by the second detection component, and the third light beam is reflected by the fifth reflective component and the sixth reflective component, and then received by the third detection component;

[0029] Step S3: The five-axis turntable is controlled to move to achieve the simulation of the relative sight angle between the infrared target beam and the infrared synthetic aperture detection device.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The present invention uses multiple groups of parallelly arranged reflection components to reasonably deflect and effectively split the optical axis of the light beam emitted by the infrared radiation source. The processed light beam is simultaneously detected and received by various detection components of the infrared synthetic aperture detection device, meeting the conditions required for its semi-physical simulation. The system of the present invention has the significant advantage of simple and compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0033] Figure 1 This is the main optical path diagram of a semi-physical simulation system of an infrared synthetic aperture detection device (taking N=3 as an example);

[0034] Figure 2 This is a top view of the optical path of a semi-physical simulation system of an infrared synthetic aperture detection device (taking N=3 as an example). DETAILED DESCRIPTION

[0035] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0036] The present invention provides a semi-physical simulation system and method for infrared synthetic aperture detection equipment. The system includes an infrared radiation source, a collimating lens, a reflective spectroscopic module, an infrared synthetic aperture detection equipment, and a five-axis turntable. The function of the collimating lens is to collimate the light beam emitted by the infrared radiation source into parallel light, and then allow it to be incident on the reflective spectroscopic module. The reflective spectroscopic module divides the light beam into multiple paths. These multiple light beams are respectively received by various detection components of the infrared synthetic aperture detection equipment at the same time. Through the movement of the five-axis turntable, the simulation of the relative line of sight angle between the infrared target light beam and the infrared synthetic aperture detection equipment is realized. The present invention is mainly used in the field of infrared guidance control semi-physical simulation. Through the reflective spectroscopic module, the light beam emitted by the infrared radiation source is allowed to cover multiple detection components around at the same time. The optical path structure of the system is simple and compact, with high integration and small space occupation, which successfully solves the difficulties faced by the semi-physical simulation of infrared synthetic aperture detection equipment.

[0037] Embodiment 1:

[0038] Figure 1 This is the main optical path diagram of a semi-physical simulation system of infrared synthetic aperture detection equipment (taking N=3 as an example). Figure 2 This is a top view of the optical path of a semi-physical simulation system of an infrared synthetic aperture detection device (taking N=3 as an example).

[0039] like Figure 1 , Figure 2 As shown, this embodiment provides a semi-physical simulation system of an infrared synthetic aperture detection device, including: an infrared radiation source 10, a collimating lens 20, an infrared synthetic aperture detection device 30, a reflection spectrometer module 40 and a five-axis turntable 50.

[0040] The infrared radiation source 10 is used to emit an infrared beam and is a black body, a xenon lamp, a halogen lamp, an LED, a resistor array, an LD light source or a modulated output light radiation of a modulated device.

[0041] The collimating lens 20 is used to collimate the infrared light beam emitted by the infrared radiation source 10 into parallel light, and the infrared radiation source 10 is located on the focal plane of the collimating lens 20. The collimating lens 20 is a fixed-focus lens or a zoom lens.

[0042] The infrared synthetic aperture detection device 30 includes a plurality of detection components, wherein the number of the detection components is N, where N is an integer greater than or equal to 2.

[0043] In this embodiment, N=3, and the number of detection components is 3, namely a first detection component 31, a second detection component 32 and a third detection component 33.

[0044] The reflective spectrometer module 40 includes a plurality of reflective components for receiving collimated parallel light and dividing it into multiple light beams. The reflective components reflect the light beams to corresponding detection components. The number of reflective components is associated with the number of detection components.

[0045] Specifically, the number of the reflective components is 2N. In this embodiment, N=3, and the number of the reflective components is 6, namely, a first reflective component 41, a second reflective component 42, a third reflective component 43, a fourth reflective component 44, a fifth reflective component 45 and a sixth reflective component 46.

[0046] The first reflection component 41 and the second reflection component 42 cooperate with each other to reflect the collimated parallel light to the first detection component 31 .

[0047] The third reflection component 43 and the fourth reflection component 44 cooperate with each other to reflect the collimated parallel light to the second detection component 32 .

[0048] The fifth reflection component 45 and the sixth reflection component 46 cooperate with each other to reflect the collimated parallel light to the third detection component 33 .

[0049] Specifically, the first reflective component 41 is arranged in parallel with the second reflective component 42 , the third reflective component 43 is arranged in parallel with the fourth reflective component 44 , and the fifth reflective component 45 is arranged in parallel with the sixth reflective component 46 .

[0050] The reflective spectroscopic module 40 forms virtual images of the entrance pupil positions of the first detection component 31, the second detection component 32 and the third detection component 33. The virtual images formed by the entrance pupil positions of the respective detection components are closely connected and arranged without gaps around the rotation center 51 of the five-axis turntable 50, and together constitute a virtual entrance pupil 60; the rotation center 51, the center of the exit pupil surface of the collimating lens 20 and the center of the virtual entrance pupil 60 coincide with each other.

[0051] Specifically, the entrance pupil position of the first detection component 31 forms a corresponding virtual image 61 through the action of the first reflection component 41 and the second reflection component 42, the entrance pupil position of the second detection component 32 forms a corresponding virtual image 62 through the action of the third reflection component 43 and the fourth reflection component 44, and the entrance pupil position of the third detection component 33 forms a corresponding virtual image with the help of the fifth reflection component 45 and the sixth reflection component 46.

[0052] The infrared light beam radiated by the infrared radiation source 10 is collimated by the collimating lens 20 and then emits parallel light, which is directed toward the rotation center and then reflected by the reflective spectroscopic module 40 to be detected and received by the first detection component 31 , the second detection component 32 and the third detection component 33 at the same time.

[0053] Specifically, the parallel light is split into three after passing through the reflective spectrometer module 40, one light beam is received by the first detection component 31 after being reflected by the first reflective component 41 and the second reflective component 42, the second light beam is received by the second detection component 32 after being reflected by the third reflective component 43 and the fourth reflective component 44, and the third light beam is received by the third detection component 33 after being reflected by the fifth reflective component 45 and the sixth reflective component 46.

[0054] The five-axis turntable 50 is used to drive the infrared synthetic aperture detection device 30 to move, so as to simulate the relative sight angle between the infrared target light beam and the infrared synthetic aperture detection device 30 .

[0055] The present invention images the entrance pupils of multiple detection components of the infrared synthetic aperture detection device 30 around the rotation center 51 of the five-axis turntable, thereby forming an equivalent virtual entrance pupil 60, so that the light beam aperture output by the collimating lens 20 can cover all entrance pupil apertures of the detection device, and combined with the movement of the five-axis turntable 50, the simultaneous simulation function of multiple detection components of the infrared synthetic aperture detection device 30 is realized.

[0056] Embodiment 2:

[0057] This embodiment provides a semi-physical simulation method for an infrared synthetic aperture detection device, using the semi-physical simulation system for an infrared synthetic aperture detection device in the above embodiment 1, and the method includes the following steps:

[0058] Step S1: start the infrared radiation source 10 to radiate an infrared light beam, and the infrared light beam is collimated by the collimating lens 20 to emit parallel light, and the parallel light shines on the rotation center 51 of the five-axis turntable.

[0059] Step S2: The parallel light is split by the reflective splitting module 40, wherein one light beam is reflected by the first reflective component 41 and the second reflective component 42 and then received by the first detection component 31, the second light beam is reflected by the third reflective component 43 and the fourth reflective component 44 and then received by the second detection component 32, and the third light beam is reflected by the fifth reflective component 45 and the sixth reflective component 46 and then received by the third detection component 33.

[0060] Step S3: The five-axis turntable 50 is controlled to move to achieve the simulation of the relative sight angle between the infrared target light beam and the infrared synthetic aperture detection device 30 .

[0061] Those skilled in the art know that, in addition to realizing the system and its various devices, modules, and units provided by the present invention in a purely computer-readable program code, it is entirely possible to realize the same functions in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers by logically programming the method steps. Therefore, the system and its various devices, modules, and units provided by the present invention can be considered as a hardware component, and the devices, modules, and units included therein for realizing various functions can also be regarded as structures within the hardware component; the devices, modules, and units for realizing various functions can also be regarded as both software modules for realizing the method and structures within the hardware component.

[0062] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0063] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A semi-physical simulation system for infrared synthetic aperture detection equipment, characterized in that: include: An infrared radiation source, used for emitting an infrared beam; A collimating lens, used for collimating the light beam emitted by the infrared radiation source into parallel light, wherein the infrared radiation source is located on the focal plane of the collimating lens; Infrared synthetic aperture detection equipment, including multiple detection components; A reflective light splitting module, comprising a plurality of reflective components, for receiving collimated parallel light and dividing it into multiple light beams, wherein the reflective components reflect the light beams to corresponding detection components, and the number of the reflective components is associated with the number of the detection components; The five-axis turntable is used to drive the infrared synthetic aperture detection device to move, so as to realize the simulation of the relative sight angle between the infrared target light beam and the infrared synthetic aperture detection device.

2. The semi-physical simulation system of infrared synthetic aperture detection equipment according to claim 1, characterized in that: The number of the detection components is 3, namely a first detection component, a second detection component and a third detection component.

3. The semi-physical simulation system of infrared synthetic aperture detection equipment according to claim 2, characterized in that: The number of the reflective components is 6, namely a first reflective component, a second reflective component, a third reflective component, a fourth reflective component, a fifth reflective component and a sixth reflective component; The first reflecting component and the second reflecting component cooperate with each other to reflect the collimated parallel light to the first detecting component; The third reflecting component and the fourth reflecting component cooperate with each other to reflect the collimated parallel light to the second detecting component; The fifth reflecting component and the sixth reflecting component cooperate with each other to reflect the collimated parallel light to the third detecting component.

4. The semi-physical simulation system of infrared synthetic aperture detection equipment according to claim 3, characterized in that: The first reflective component is arranged in parallel with the second reflective component, the third reflective component is arranged in parallel with the fourth reflective component, and the fifth reflective component is arranged in parallel with the sixth reflective component.

5. The semi-physical simulation system of infrared synthetic aperture detection equipment according to claim 3, characterized in that: The reflective spectroscopic module forms virtual images of the entrance pupil positions of the first detection component, the second detection component and the third detection component. The virtual images formed by the entrance pupil positions of the various detection components are closely connected and arranged without gaps around the rotation center of the five-axis turntable, and together form a virtual entrance pupil; the rotation center, the exit pupil center of the collimating lens and the center of the virtual entrance pupil coincide with each other.

6. The semi-physical simulation system of infrared synthetic aperture detection equipment according to claim 5, characterized in that: The infrared light beam radiated by the infrared radiation source is collimated by the collimating lens and then emits parallel light, which is directed toward the rotation center and then reflected by the reflective spectroscopic module to be detected and received simultaneously by the first detection component, the second detection component and the third detection component.

7. The semi-physical simulation system of infrared synthetic aperture detection equipment according to claim 6, characterized in that: The parallel light is split into three after passing through the reflective spectrometer module, wherein one light beam is received by the first detection component after being reflected by the first reflective component and the second reflective component, the second light beam is received by the second detection component after being reflected by the third reflective component and the fourth reflective component, and the third light beam is received by the third detection component after being reflected by the fifth reflective component and the sixth reflective component.

8. The semi-physical simulation system of infrared synthetic aperture detection equipment according to claim 1, characterized in that: The infrared radiation source adopts a black body, a xenon lamp, a halogen lamp, an LED, a resistor array, an LD light source or a modulated output light radiation of a modulated device.

9. The semi-physical simulation system of infrared synthetic aperture detection equipment according to claim 1, characterized in that: The collimating lens is a fixed-focus lens or a zoom lens.

10. A semi-physical simulation method for infrared synthetic aperture detection equipment, characterized in that: The method of using the semi-physical simulation system of infrared synthetic aperture detection equipment according to any one of claims 1 to 9 comprises the following steps: Step S1: starting the infrared radiation source to radiate an infrared beam, the infrared beam is collimated by a collimating lens and then emits parallel light, the parallel light is directed toward the rotation center of the five-axis turntable; Step S2: the parallel light is split by the reflective splitting module, one of the light beams is reflected by the first reflective component and the second reflective component, and then received by the first detection component, the second light beam is reflected by the third reflective component and the fourth reflective component, and then received by the second detection component, and the third light beam is reflected by the fifth reflective component and the sixth reflective component, and then received by the third detection component; Step S3: The five-axis turntable is controlled to move to achieve the simulation of the relative sight angle between the infrared target beam and the infrared synthetic aperture detection device.

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